MICROANATOMY

Detailed explanation-1: -Acute pyelonephritis is a bacterial infection causing inflammation of the kidneys and is one of the most common diseases of the kidney. Pyelonephritis occurs as a complication of an ascending urinary tract infection (UTI) which spreads from the bladder to the kidneys and their collecting systems.

Detailed explanation-2: -pyelonephritis, infection and inflammation of the kidney tissue and the renal pelvis (the cavity formed by the expansion of the upper end of the ureter, the tube that conveys urine to the bladder). The infection is usually bacterial. The most common type of renal disorder, pyelonephritis may be chronic or acute.

Detailed explanation-3: -Acute pyelonephritis is a bacterial infection of the kidney parenchyma that can be organ-and/or life-threatening and that often leads to scarring of the kidney. The bacteria in these cases have usually ascended from the lower urinary tract, but may also reach the kidney via the bloodstream.